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Gentoo: GLSA-201207-06 Normal: JRuby Denial of Service Condition

gentoo
Calendar Grey July 9, 2012
Dist Gentoo Esm H88
Security flaw discovered in JRuby. Users of Gentoo Linux advised to update to reduce potential threats.
A hash collision vulnerability in JRuby allows remote attackers to cause a Denial of Service condition.

Summary

JRuby does not properly randomize hash functions to protect against hash collision attacks.

Topics%20covered

Topics Covered

security advisory Gentoo software update Denial of Service normal severity hash collision JRuby

Resolution

All JRuby users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-java/jruby-1.6.5.1"

References

[ 1 ] CVE-2011-4838 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4838

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201207-06
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: Normal
Title: JRuby: Denial of Service
Date: July 09, 2012
Bugs: #396305
ID: 201207-06

Topics%20covered

Topics Covered

security advisory Gentoo software update Denial of Service normal severity hash collision JRuby

Synopsis

A hash collision vulnerability in JRuby allows remote attackers to cause a Denial of Service condition.

Background

JRuby is a Java-based Ruby interpreter implementation.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-java/jruby < 1.6.5.1 >= 1.6.5.1

Impact

===== A remote attacker could send a specially crafted input, possibly resulting in a Denial of Service condition.

Workaround

There is no known workaround at this time.

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